I'm planning on putting the 4 petal reed valve on my 64cc Polini kit so that I can get a 19 or 21mm Dellorto on top. I'm running a Techno Estori on the bottom. I can see that I'll have to shave of some fins from my cylinder and head for the carb to fit. I was wondering what others have done. I was thinking of getting one of the ZA50 Polini intake spacers, in order to cut fewer fins off. Can the reed valve be mounted facing the rear as well? Are there any problems/performance drawbacks with making intake extensions, such as two curved pipe fittings to get the carb just up and over the cylinder? If anyone has this set up, is a 21mm overkill (as in, will you feel little difference between the 19 and 21mm?) Thanks,
greger,gb